curl --request POST \
  --url https://api.x84.ai/agents/register \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "my-research-agent",
  "ownerAddress": "D6j5dis544qzYmSNixwYwBXqcDqgWiFHpi6hebPEQNVu",
  "metadataUri": "https://arweave.net/abc123",
  "tags": [
    "research",
    "defi"
  ]
}
'

{
  "transaction": "<string>",
  "assetPublicKey": "<string>",
  "agentPda": "<string>",
  "blockhash": "<string>",
  "lastValidBlockHeight": 123
}